• Abdelmigeed, Mai O.
• Mahle, John J.
• Peterson, Gregory W.

Abstract

<jats:title>Abstract</jats:title><jats:p>Recent research has demonstrated the degradation of organophosphonates through hydrolysis using microporous UiO–66–NH<jats:sub>2</jats:sub>‐fabric composites. Yet, challenges remain due to the limitations of organophosphonates accessing active sites in large, engineered granules. To address this, an innovative approach to integrate mesoporous UiO–66–NH<jats:sub>2</jats:sub> onto various fabrics is provided, thereby overcoming previous mass transfer limitations. Mesoporosity in the UiO–66–NH<jats:sub>2</jats:sub>‐fabric is attributed to the amphoteric cocamidopropylbetaine (CAPB) surfactant which templates the mesochannel construction. Unexpectedly, because the synthesis is aqueous, benign, low temperature (60°C), and avoids strong acids and toxic solvents, it is compatible with fragile supports such as untreated cotton. The UiO–66–NH<jats:sub>2</jats:sub>‐fabric composite formed using treated polypropylene (PP) attains a BET specific surface area of 360 m<jats:sup>2</jats:sup> g<jats:sup>−1</jats:sup><jats:sub>comp</jats:sub>. Remarkably, the mesoporous UiO–66–NH<jats:sub>2</jats:sub>‐composites exhibit a pore volume as large as 0.2 cm<jats:sup>3</jats:sup> g<jats:sup>−1</jats:sup><jats:sub>comp</jats:sub>, 33% in the mesoporous range, which is higher than other previous reports. Practically, the mesoporous UiO–66–NH<jats:sub>2</jats:sub>‐treated PP composite enhances the rate of methyl paraoxon (DMNP) degradation, showing a <jats:italic>t</jats:italic><jats:sub>1/2</jats:sub> value that is 15 times faster than microporous UiO–66–NH<jats:sub>2</jats:sub> composites measured under the same conditions. Similar trends are observed in the degradation of actual nerve agents. These composites hold significant potential across diverse applications, including filtration, protection, and catalysis.</jats:p>

Topics

• impedance spectroscopy
• pore
• surface
• composite
• surfactant